By G. W. C. Milner, G. M. Phillips and R. J. Magee (Auth.)
Read or Download Coulometry in Analytical Chemistry PDF
Similar international_1 books
Own build Psychology (PCP) was once devised via George Kelly in 1955 as a brand new strategy in psychotherapy. in view that then, his innovations were utilized largely all through psychology and past, to incorporate parts as different as nursing, clash answer, sociology and literary feedback. This guide brings jointly, for the 1st time, quite a lot of theories, learn and perform that experience grown out of Kelly's unique suggestion.
This ebook constitutes the refereed complaints of the thirteenth overseas convention on Cryptology and community protection, CANS 2014, held in Heraklion, Creete, Greece, in October 2014. The 25 revised complete papers offered including the abstracts of three invited talks have been conscientiously reviewed and chosen from 86 submissions.
This ebook constitutes the completely refereed post-conference lawsuits of the second one foreign convention on cellular, safe and Programmable Networking, held in Paris, France, This ebook constitutes the completely refereed post-conference complaints of the second one overseas convention on cellular, safe and Programmable Networking, held in Paris, France, in June 2016.
- Diversity, Ethnicity, Migration and Work: International Perspectives
- The European Union and global social change : a critical geopolitical-economic analysis
- Advances in Cryptology — EUROCRYPT 2001: International Conference on the Theory and Application of Cryptographic Techniques Innsbruck, Austria, May 6–10, 2001 Proceedings
- The Japanese Economy and the Way Forward
Extra info for Coulometry in Analytical Chemistry
In a coulometer circuit the input to the motor is taken from the potential drop across a suitable resistor in series with the electrolysis cell. The basic circuit is shown in Fig. 7. c. source need not be as stable or as constant as those discussed previously, and this results in cheaper equipment. However, this is not an absolute method and the apparatus has to be calibrated either electrically with a precise constantcurrent source or chemically by coulometric titration of a known amount of an accepted standard.
27, 2 1 0 (1955). KESLER, R . , Analyt. Chem. 3 5 , 963 (1963). M O N K , R. G. and G O O D E , G. C , Talanta 1 0 , 5 1 (1963). COOKE, W . D . and F U R M A N , N . , Analyt. Chem. 2 2 , 896 (1950). CAC—C Analyt. CHAPTER 4 Equipment for Controlled-Potential Coulometry THE importance of potential control in effecting the desired reaction at an electrode in electrochemical analysis has been appreciated for many years. Sand,1 Fischer2 and Lassieur3 carried out pioneer investigations in controlled-potential electrolysis using manual control to maintain the potential of the cathode at a chosen value with respect to a standard reference electrode.
The circuit is capable of maintaining currents up to about 500 mA constant to within ± 0 · 05 %. c. supply voltage are compensated similarly. 6AS7 'V Rectifier circuits Ballast resistor and switching circuit o À' i S 90V y inconstant current Constant current FIG. 5. Mains-operated constant-current coulometric circuit of Reilley, Cooke and Furman. c. mains-operated instrument to keep currents up to 150 mA constant to within ±0-01 %. The circuit is shown in Fig. 5 and it has the following main features: CURRENT SOURCES 35 (1) a valve rectifier (type 5U4) with its associated smoothing circuit; (2) a ballast resistor consisting of a series of incandescent lamps L; (3) a voltage regulator circuit with valves of types 6SL7 and 6AS7.